Seiko Cal. 5642 - 498

Released in 1965, the Cal. 5642 with design code 498 was part of Seiko's domestic market collection. Powered by the 5642 caliber with 30j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-0ea65929df45]

Also known as: Monster, Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

14.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Black

Jewels

30j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1965

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